Green Ray announces most efficient LED light available, Philips demos prototype better still

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margin-right: 9px;">ENVIRONMENT</a> </div>  <h1 id="ar_title">Green Ray announces most efficient LED light available, Philips demos prototype better still</h1> <div class="summary_details_left"> <p>By <a href="/web/20130607080957/http://www.gizmag.com/author/james-holloway/" rel="author">James Holloway</a></p> <p><em>April 12, 2013</em></p> </div> <div class="summary_details_right"> <div class="has_comments"><a href="green-ray-philips-most-efficient-leds#comments">5 Comments</a></div> </div> </div> <div id="article_share_rail"> <div class="as_button"><div class="fb-like" data-href="http://www.gizmag.com/green-ray-philips-most-efficient-leds/27046/" data-send="false" data-layout="box_count" data-show-faces="false"></div><script type="text/javascript">_ga.trackFacebook();</script></div> <div class="as_button"><a href="https://web.archive.org/web/20130607080957/http://twitter.com/share" class="twitter-share-button" data-count="vertical" data-via="gizmag">Tweet</a></div> <div class="as_button"><div class="g-plusone" data-size="tall" data-href="http://www.gizmag.com/green-ray-philips-most-efficient-leds/27046/"></div></div> <div class="as_button"><iframe style="overflow: hidden; margin: 0px; padding: 0px; border: 0px; " src="https://web.archive.org/web/20130607080957if_/http://badge.stumbleupon.com/badge/embed/5/?url=http%3A%2F%2Fwww.gizmag.com%2Fgreen-ray-philips-most-efficient-leds%2F27046%2F" width="50" height="60" id="iframe-stmblpn-widget-1"></iframe></div> <div class="as_button"><div class="pin-it-button" data-url="https://web.archive.org/web/20130607080957oe_/http://www.gizmag.com/green-ray-philips-most-efficient-leds/27046/" data-image="http://images.gizmag.com/hero/energy-efficient-lighting.jpg" data-description="Back-to-back announcements from Green Ray LED and Philips show signs that there is now clear water between LED lights and fluorescent lights so far as energy efficiency is concerned."></div></div> <div class="as_button"><script type="IN/Share" data-counter="top"></script></div> <div class="as_button" id="reddit_button_rail"><script type="text/javascript">reddit_newwindow='1'</script></div> <div class="as_button" id="email_a_friend_rail"><span class="email_a_friend">Email</span></div> </div> <div id="hero_box" style="width: 530px;"> <a id="hero_link" href="/web/20130607080957/http://www.gizmag.com/green-ray-philips-most-efficient-leds/27046/pictures"> <img src="https://web.archive.org/web/20130607080957im_/http://images.gizmag.com/hero/energy-efficient-lighting.jpg" title="Philip's Coen Liedenbaum shows off the 200-lm/W prototype LED tube" width="530" height="297" alt="Philip's Coen Liedenbaum shows off the 200-lm/W prototype LED tube"/></a> <div class="pic_caption"> <p>Philip's Coen Liedenbaum shows off the 200-lm/W prototype LED tube</p> </div> <div class="clear_both"></div> </div> <div class="article_body"> <div id="top_unit"></div> <script type="text/javascript"> </script> <script type="text/javascript" src="https://web.archive.org/web/20130607080957js_/http://pagead2.googlesyndication.com/pagead/show_ads.js"></script> <p>Back-to-back announcements from Green Ray LED and Philips suggest that there is now clear water between LED and fluorescent lights when it comes to energy efficiency. The proverbial glow of commercially available lights boasting better than 200 lumens per watt efficacy can now clearly be seen radiating over the horizon.</p> <p>US start-up Green Ray LED claims to have the world's most efficient LED lighting product, a replacement for a T8-type fluorescent tube which emits a remarkable 173 lumens per watt.</p> <p>This performance is verified by the Department of Energy's Lighting Facts website, a database of lighting products which site visitors can search according to chosen criteria. Sure enough, adjusting the "lumens per watt" slider to search for products with efficacy between 170 and 200 lm/W (which is the maximum the site allows), reveals only one product: a Green Ray RED "replacement lamp" with an efficacy of 173 lm/W.</p> <p>The 15 W lamp is 4 ft (120 cm) long and emits 2,600 lumens. The pay-off, if there is one, is the lamp's color appearance which, at 5,000 K is distinctly cool.</p> <p>However, according to Philips, it seems the DoE may soon have to raise the upper limit on that efficacy slider. It has announced a prototype LED lamp at 200 lm/W. The prototype is also tube-shaped (which Philips calls TLED), and though no precise color temperature has been announced, the company claims this is a warm white product. However, Philips says the prototype won't be ready for a commercial launch until 2015.</p> <p>Combined, these developments are clear signs that LED technology is now pulling away from fluorescent lighting in the race for energy efficiency. Though fluorescent tubes can achieve over 100 lm/W, still excellent by today's standards, compact fluorescent lamps – the kind used as energy-saving fluorescent light bulbs in the home – typically hover around the 60–70 lm/W mark. With manufacturers pouring their R&D; budgets into solid state technology, it seems unlikely that fluorescent lighting will fight back. Philips claims that if all fluorescent lights in the US were replaced with its prototype, 100 TWh less energy (presumably per year).</p> <p>Before too long, it seems 200 lm/W will become the benchmark of excellence that 100 lm/W is today. While throwing these sorts of figures around, it's interesting to note that GE recently launched its best ever "energy-efficient" incandescent halogen light. At 18 and 20 lm/W (according to the figures on the box), the product illustrates the apparent elasticity of terms like energy efficiency, and illustrate the need to promote the lumen and the lumen/watt as the key performance metrics of light fittings. Resources like the Lighting Facts website will hopefully do just that.</p> <p><strong>Update, 04.13.2013:</strong> Philips has been in touch to tell us that its TLED lamp will have a color temperature between 3,000 and 4,000 K, with color-rendering index of above 80. It will initially be offered as a replacement for both T5 and T8-type fluorescent tubes.</p> <p><strong>Update, 04.19.2013:</strong> This article previously stated that a switch to the LED lamps would save 100 TW of power, rather than 100 TWh of energy. Because Philips did not specify a timeframe for that energy saving, this was incorrectly assumed to be an error. Apologies for any confusion caused.</p> <p>Thanks to the readers that pointed out th</p> <p>Sources: <a href="https://web.archive.org/web/20130607080957/http://www.newscenter.philips.com/main/standard/news/press/2013/20130411-philips-creates-the-world-s-most-energy-efficient-warm-white-led-lamp.wpd#.UXEgWIKpNGF" target="_blank">Philips</a>, <a href="https://web.archive.org/web/20130607080957/http://www.greenrayled.com/" target="_blank">Green Ray LED</a>, <a href="https://web.archive.org/web/20130607080957/http://www.youtube.com/watch?v=EtD-Su-q8Ys" target="_blank">GE Lighting (YouTube)</a></p>    <script type="text/javascript" src="https://web.archive.org/web/20130607080957js_/http://static.fmpub.net/zone/7980"></script> <div id="bottom_unit"> <script type="text/javascript"> </script> <script type="text/javascript" src="https://web.archive.org/web/20130607080957js_/http://pagead2.googlesyndication.com/pagead/show_ads.js"></script> </div> </div> <span class="title share_bar">Share</span> <div id="article_share_bar" class="dotsontop share_bar"> <div class="as_button fb_as_button"><div class="fb-like" data-href="http://www.gizmag.com/green-ray-philips-most-efficient-leds/27046/" data-send="false" data-layout="box_count" data-show-faces="false"></div><script type="text/javascript">_ga.trackFacebook();</script></div> <div class="as_button"><a href="https://web.archive.org/web/20130607080957/http://twitter.com/share" class="twitter-share-button" data-count="vertical" data-via="gizmag">Tweet</a></div> <div class="as_button"><div class="g-plusone" data-size="tall" data-href="http://www.gizmag.com/green-ray-philips-most-efficient-leds/27046/"></div></div> <div class="as_button"><iframe style="overflow: hidden; margin: 0px; padding: 0px; border: 0px; " src="https://web.archive.org/web/20130607080957if_/http://badge.stumbleupon.com/badge/embed/5/?url=http%3A%2F%2Fwww.gizmag.com%2Fgreen-ray-philips-most-efficient-leds%2F27046%2F" width="50" height="60" id="iframe-stmblpn-widget-2"></iframe></div> <div class="as_button"><div class="pin-it-button" data-url="https://web.archive.org/web/20130607080957oe_/http://www.gizmag.com/green-ray-philips-most-efficient-leds/27046/" data-image="http://images.gizmag.com/hero/energy-efficient-lighting.jpg" data-description="Back-to-back announcements from Green Ray LED and Philips show signs that there is now clear water between LED lights and fluorescent lights so far as energy efficiency is concerned."></div></div> <div class="as_button"><script type="IN/Share" data-counter="top"></script></div> <div class="as_button" id="reddit_button_bar"><script type="text/javascript">reddit_newwindow='1'</script></div>  </div>  <span class="title clear_left" id="author_byline_title">About the Author</span> <div class="dotsontop" id="authorcontainer">  <a href="/web/20130607080957/http://www.gizmag.com/author/james-holloway/"> <img src="https://web.archive.org/web/20130607080957im_/http://images.gizmag.com/author_profiles/159.jpg" alt="James Holloway" id="bio_pic"/> </a>   James is a graduate of the Open University, with a B.Sc. in Technology and a Diploma in Design and Innovation. After a decade in building design engineering, he side-stepped into writing about green tech and the environment. When not clattering about the web, he listens to early 90s hip hop, writes bad haiku and ponders the merits of an English three-man seam attack.   <a href="/web/20130607080957/http://www.gizmag.com/author/james-holloway/">All articles by James Holloway</a> <span id="author_byline_links">    <a href="https://web.archive.org/web/20130607080957/http://twitter.com/jamesholloway" class="twitter-follow-button" data-show-count="false" data-size="large">Follow @jamesholloway</a> </span> <br class="clear_both"> </div>  <div id="tags"> <span class="title">Tags</span> <div class="dotsontop"> <ul> <li>» <a href="/web/20130607080957/http://www.gizmag.com/tag/energy-efficient/" rel="tag">Energy-efficient</a></li> <li>» <a href="/web/20130607080957/http://www.gizmag.com/tag/energy-saving/" rel="tag">Energy-saving</a></li> <li>» <a href="/web/20130607080957/http://www.gizmag.com/tag/led/" rel="tag">LED</a></li> <li>» <a href="/web/20130607080957/http://www.gizmag.com/tag/lighting/" rel="tag">Lighting</a></li> <li>» <a href="/web/20130607080957/http://www.gizmag.com/tag/worlds-most-efficient/" rel="tag">World's Most Efficient</a></li> </ul> <div class="clear_both"></div> </div> </div> <div id="bing_unit"></div>  <span class="title" id="comments">5 Comments</span> <div class="dotsontop"> <div id="comment-215245" class="a_comment"> <p>James </p> <p>"Philips claims that if all fluorescent lights in the US were replaced with its prototype, 100 TW of power consumption would be cut." </p> <p></p> <p>Total US ave power is around 440GW, you must have meant 100 TWh of energy per year which divided by 8,760 hrs/yr averages to a sensible 11.4GW power. </p> <p></p> <span class="name">BrianN</span><br> <span class="date"> 12th April, 2013 @ 08:26 am PDT</span> </div> <div id="comment-215374" class="a_comment"> <p>The Cree XLamp MK-R is already hitting up to 200 lumens per watt. </p> <p></p> <span class="name">Electrothump</span><br> <span class="date"> 12th April, 2013 @ 01:23 pm PDT</span> </div> <div id="comment-215428" class="a_comment"> <p>What's mainly impressive to me is that this is in a form that can replace long-form fluorescent bulbs. As an LED bulb, this won't be nearly as dangerous to drop (no mercury fumes). </p> <span class="name">Joel Detrow</span><br> <span class="date"> 12th April, 2013 @ 05:10 pm PDT</span> </div> <div id="comment-215848" class="a_comment"> <p>When will the advance to T12 lamps be available ? </p> <p></p> <span class="name">James Colby</span><br> <span class="date"> 15th April, 2013 @ 09:59 am PDT</span> </div> <div id="comment-216127" class="a_comment"> <p>Just to be clear, </p> <p></p> <p>Green Ray product is market ready TODAY, it is also already approved by DOE Lighting Facts program and the label has been issued. </p> <p></p> <p>On the other side Philips claim to have a prototype lamp that they think will be ready on 2015. </p> <p></p> <p>You can claim to have any type of values, CCT for example (like they do on the update), but what is real is what is ready today and approved by independent parties. </p> <p></p> <p>As a Green Ray team member I am sure we can tell you about many prototypes we are developing but we rather release news after we can prove independently what we have achieved. </p> <p></p> <p>Thanks </p> <p></p> <p></p> <span class="name">Facebook User</span><br> <span class="date"> 16th April, 2013 @ 03:22 am PDT</span> </div> </div> <span class="title">Post a Comment</span> <div class="dotsontop" id="comment_form_div"> <div id="comment_form" data-article="27046"> <div id="comments_login"> <form action="/web/20130607080957/http://www.gizmag.com/index.php" name="login_form" id="login_form" onsubmit="return false;"> <p class="bold">Login with your gizmag account:</p> <p id="login_status"></p> <label for="email">Email</label><input type="text" name="email" id="email" value=""/> <label for="password">Password</label><input type="password" name="password" id="password" value=""/> <input type="submit" value="Log In" class="med"/> <div id="options"> <a href="/web/20130607080957/http://www.gizmag.com/register/">Register here</a><br> <a href="/web/20130607080957/http://www.gizmag.com/new_password/">Forgotten your password?</a> </div> <input type="hidden" id="expired_comment" value=""/> </form> </div> <div id="facebook_login"> <p>Or <span class="bold">Login with Facebook:</span></p><br/> <div class="fb-login-button" data-scope="email" data-max-rows="1" data-onlogin="loginFUser(27046);" data-autologoutlink="true"></div> </div> </div> <div class="clear_both"></div> </div>  <span class="title">Related Articles</span> <div id="related_articles" class="dotsontop"> <ul> <li> <a href="/web/20130607080957/http://www.gizmag.com/philips-22w-led-energy-star/26912/" title="Philips 22 W (100-W incandescent equivalent) LED light bulb"> <img src="https://web.archive.org/web/20130607080957im_/http://images.gizmag.com/related/philips-22w-led-1.jpg" alt="Philips 22 W (100-W incandescent equivalent) LED light bulb"/> </a> <a class="rel_title" href="/web/20130607080957/http://www.gizmag.com/philips-22w-led-energy-star/26912/">Philips 22-W LED is first Energy Star 100-W equivalent bulb ... but why?</a> <p class="rel_date">3rd April, 2013</p> </li> <li> <a href="/web/20130607080957/http://www.gizmag.com/baby-plumen-lightbulb/24093/" title="The Baby Plumen is better suited to regular lightbulb duties than its elder sibling"> <img src="https://web.archive.org/web/20130607080957im_/http://images.gizmag.com/related/hulger-baby-plumen-001.jpg" alt="The Baby Plumen is better suited to regular lightbulb duties than its elder sibling"/> </a> <a class="rel_title" href="/web/20130607080957/http://www.gizmag.com/baby-plumen-lightbulb/24093/">Has fluorescent still got it? 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